Altimmune Inc. (ALT)
Showing Closing Date Range from Jul 21 to Oct 19, 2026 compared to Apr 21 to Jul 20, 2026.
Compare Last 3 Months with Previous Period
Investor Relations:altimmune.com
Current Period Close
$2.20
Jul 21, 2026 - Oct 19, 2026
Previous Period Close
$2.81
Apr 21, 2026 - Jul 20, 2026
Net Comparison Delta
$-0.61 (-21.71%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(61 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 16, 2026 | $2.20 | Jul 17, 2026 | $2.87 | -23.34% |
| Oct 15, 2026 | $2.36 | Jul 16, 2026 | $2.85 | -17.19% |
| Oct 14, 2026 | $2.31 | Jul 15, 2026 | $2.98 | -22.48% |
| Oct 13, 2026 | $2.43 | Jul 14, 2026 | $2.93 | -17.06% |
| Oct 12, 2026 | $2.56 | Jul 13, 2026 | $2.99 | -14.38% |
| Oct 09, 2026 | $2.61 | Jul 10, 2026 | $3.05 | -14.43% |
| Oct 08, 2026 | $2.60 | Jul 09, 2026 | $3.12 | -16.67% |
| Oct 07, 2026 | $2.66 | Jul 08, 2026 | $3.11 | -14.47% |
| Oct 06, 2026 | $2.67 | Jul 07, 2026 | $3.02 | -11.59% |
| Oct 05, 2026 | $2.67 | Jul 06, 2026 | $3.08 | -13.31% |
| Oct 02, 2026 | $2.74 | Jul 02, 2026 | $3.16 | -13.45% |
| Oct 01, 2026 | $2.76 | Jul 01, 2026 | $3.15 | -12.38% |
| Sep 30, 2026 | $2.86 | Jun 30, 2026 | $3.04 | -5.92% |
| Sep 29, 2026 | $2.97 | Jun 29, 2026 | $2.94 | +1.02% |
| Sep 24, 2026 | $3.04 | Jun 26, 2026 | $2.82 | +7.80% |
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